In the case of sub menu, some property value is concatenated with parent menu name separated by an underscore (" _ ").

在子菜单中，有一些属性值会与由下划线(“_”)隔开的上级菜单联系起来。

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Property prices in the US have already dropped by almost a third from their peak, as the crisis spread from lower-paid sub-prime borrowers to engulf the entire housing market.

随着美国房贷危机从低收入的次贷借款人蔓延至整个房地产市场，美国的房地产价格已经从最高点下跌了近三分之一。

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If an element contains more than one sub-element of the same name, those sub-elements will be turned into an array property.

如果一个元素包含多个相同名称的子元素，这些子元素将转换为一个数组属性。

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Make illegal sub-letting of social housing property a specific criminal offence.

BBC: Bill-by-bill: Guide to MPs' private members' bills

And it's no surprise to hear lunch conversations focused on intellectual property challenges in China and supply chain strategies for Sub-Saharan Africa.

CNN: Entrepreneurs take to the seas for inspiration